Engine starts smooth, within 20 seconds starts cutting out and missing. on 2001 Nissan Xterra

Tried to relief pressure on what I believed was clogged catalytic converters. Did not work.

Asked by for the 2001 Nissan Xterra
The distributors on this engine give a BUNCH of trouble and exhibit those exact same symptoms!! Hard to pinpoint it also as it is a multi componet dist. The only cure is replacement of the distributor assembly with a NEW one! Just something i have run across at the shop. Let us know how you make out with this.
Have a mechanic check it out but it most likely will not have a relàted code!
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agree with pushrod